@article{ref1,
title="Carbon dioxide (carbonic acid gas)",
journal="American Industrial Hygiene Association journal",
year="1964",
author="Newman, B. L.",
volume="25",
number="",
pages="519-521",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0002-8894",
doi="",
url="http://dx.doi.org/"
}